Oiler



FIG. 1 is a front angular perspective view of an oiler according to my new design;

FIG. 2 is a top view of the oiler as shown in FIG. 1;

FIG. 3 is a leftside view of the oiler as shown in FIG. 1; and,

FIG. 4 is a side elevational view of an oiler as shown in FIG. 1. 

The ornamental design for an oiler, as shown and described. 